So I was looking at the characters that have reappeared after Wano and decided to make a list going over who Oda has brought back.
Also, if you’ve pondered over what a character’s next move in the story will be, then what character is it?:
Doflamingo
Hancock
Teach
Shanks
Crocodile
Sakazuki
Law
Kuma
Garp
Marco
Kuzan
Kid
Borsalino
Moria (flashback)
Buggy
Sabo
Mihawk
Smoker
Dragon
Caesar
Sengoku
Rayleigh
Lucci
Vivi
Bonney
Ivankov
Kin'emon
Katakuri
Issho (flashback)
Drake
Tashigi
Koby
Yamato (cover story)
Momonosuke
Pudding
Caribou
Perona (flashback)
Shiki (flashback)
Magellan
Shirahoshi
Carrot
Rebecca
Hatchan (flashback)
Judge
Wapol
Sentomaru
Koala
Tsuru
Jango
Sai (flashback)
Shakuyaku
Imu
Helmeppo
Tama
Hina
Saul
Karoo
Hajrudin (flashback)
Duval
Weevil (flashback)
Gin
Leo
Kong (flashback)
Gloriosa
Dorry
Stussy
Brogy
Fullbody
Oimo
Kashii
Also made a bonus list as to what characters he has yet to bring back after Wano:
Enel
Bellamy
Bentham
Bege
Jozu
Bartolomeo
Urouge
Pekoms
Vista